<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<script>
    data_list = [11, 22, 33];
    for (var i = 0; i++; i < data.length) {

        function xx(data) {
            $.ajax({
                url: "....",
                data: {value: data_list[data]},
                success: function (res) {
                    // 1分钟之后执行回调函数
                    console.log(data); // 输出：0/1/2
                }
            })
        }

        xx(i)
    }
    console.log(i) // 输出：2
</script>
</body>
</html>